/*
 * Copyright 2011-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.sabayframework.mem.impl;

import java.io.IOException;

import org.sabayframework.mem.BigBuffer;

public final class HeapBigBufferAllocator extends AbstractBigBufferAllocator {

	@Override
	public void free(BigBuffer buffer) {
	}

	@Override
	public BigBuffer allocate(long size) {
		if(size < 0 || size > Integer.MAX_VALUE) throw new IllegalArgumentException();
		if(size == 0) return EmptyBigBuffer.INSTANCE;
		return new UnsafeByteArrayBuffer(new byte[(int)size]);
	}

	@Override
	public void clear() {
	}

	@Override
	public long getCapacity() {
		return Runtime.getRuntime().totalMemory();
	}

	@Override
	public void close() throws IOException {
	}

}
